Nuclear power can generate electricity without greenhouse gas emissions. However, there are concerns about its safety. Learn about the safety and health concerns associated with the threat of nuclear meltdowns, as well as the challenges involved in storing radioactive waste.he isotope U-235 is important because it can be used in the nuclear fission chain reaction to create a lot of energy. Unlike the uranium used in a nuclear bomb, which is about 90% enriched with the isotope U-235, the uranium used in a nuclear reactor is only slightly enriched, to about four or five percent.
1 Professional sod installation typically costs $500 to $1,000 for a 2,000 sq. ft. or smaller lawn. 2  Per square foot installation costs average $.50 to $1.00. 3  Installing sod on smaller lawns tends to cost more per square foot.
1 Expect to pay $400-$600 for 1,000 square feet of sod. 2  Installation typically doubles prices, making 1,000 square feet of sod to cost $800-$1,200. 3  A typical sized 5,000 square foot lawn costs $3,000-$5,000 including the sod with installation.actors affecting the following prices include the part of the country you reside (costs below are based on national averages), the type of sod selected and the amount of preparation your current soil needs. 1  Expect to pay $400-$600 for 1,000 square feet of sod.